Minor tweaks/cleanup of PropertyGraphSail
Resolved merge conflict
Provided a test case that failed against OrientDB 1.4. Switched to OrientDB 1.4.1

Before the Blueprints release we'll release the minor 1.4.1 to avoid BP
depends by a OrientDB SNAPSHOT.
Merge branch 'master' of git://github.com/tinkerpop/blueprints